Improvement in lamps



the wings h h UNIT D STATES "OFFICE ROBERT PARK, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT m LAMPS.

Specification forming part of Letters Patent-No. 183,591, dated October 24, 1876; application'filed February 12, 1876. I l

To all whom it may concern:

Be it known that 1, ROBERT W. PARK, of Philadelphia, .in the county of Philadelphia and State of Pennsylvania, have invented cer-.

tain new and useful Improvements in-Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it,

reference being had to the accompanying draw apartments.

.The nature of my invention consists in the peculiar construction and combination of parts whereby coal-oil of the common specific gravity is safely volatilized without danger of explosion, and burned at the point of combustion in a gaseous form.

Referring to the accompanying drawing, A represents the reservoir or bowl, preferably of cylindrical form, having a central passage, B. 0 represents a retort placed within the passage B, and communicating with the reservoir A at the bottom of both by narrow tubes 00. D D are arms, of which any desired number may be used, radiating from the retort G, and passing through the inner wall of the reservoir A. E is a flat wick-tube, forming a continuation of the retort 0, its sides being corrugated or grooved, as shown at e 6, so as to leave passages between it and the wick. F shows the wick, on the upper extremity of which is placed a slide, G, having ears 9 g, by which it is retained and prevented from dropping into the retort. .El represents the burner, composed of the collar h, which encircles the upper diminished end of the retort G and which flare or spread from their point of connection with said collar until about one level with the top of the wick-tube,

whence they ascend vertically. k h are shoulders or ledges on the inner sides of the wings h and k h are perforations in said wings, both above and below the shou'ldersh. The operation is substantially as follows:

equivalent material, the reservoir A is to be supplied with oil, either by pouring it in the tube E or by vfilling through a' nozzle, 0,. If the latter plan be adopted,said nozzle should be remote from the burner, and be tightly closed,'to prevent the "admission of air or escape of gas afterthe filling has been accomplished. The slide Gris then adjusted on the wick F, the latter being placed, as shown, in the tube E. The burner H is now fitted in position and a light applied to the wick. The oil soaked up by the latter at first takes tire, burning as in an ordinary lamp. Soon, however, the burner, Wick-tube, and retort become heated, giving caloric to the arms D, by which it is conducted directly into the oil contained in the reservoir A. The application of this conducted heat volatilizes the oil in saidreservoir, whence it passes into the retort- C. There, being subjected to a still higher heat, it is completely volatilized, and passes in the form of gas through the groovedpassages e e to the point of combustion.

It will be observed that while a high heat is conveyed to the oil in the reservoir, there is nochance for explosion, as said reservoir is perfectly air-tight. Should a great pressure of gas exist in said reservoir it will find its escape through the retort, and thence to the burner, where it will be safely consumed. It is believed, however,- that too great a pressure will never occur, as the caloric conducted by the arms D, while sufficient to volatilize the oil to the required degree, will never be great enough to produce disasteror accident.

If desired, the wings of the burner may be inclined, instead of ascending vertically; or they may be curved to conform to the shape of a dome, in every case, however, having passages k h for the supply of oxygen necessary to support combustion.

The object of the ledges h is to catch the flame ascending from the burner and cause it to be thrown to some extent back upon the collar h and tube E, thus heating the retort and arms D D. If desired, the tube E, as well The retort 0 being packed with wick, or

as :fli was ai m D; ii mhb if* in in orderwo better conduct"the heat oflthe" burner to the oil in the reservoir. The passage B leaves a space around the retort, thus, in a measure, disconnecting said retort from the reservoir A andpreventing the conduct of two greataTdegre'e of heat from the fer-mew to the latter. It also allows a current of air to pass up to theburner, said?gair qbecoming. rarefied as it ascends, and thus better assistin g combustion than if it were cold.

Theopenings h hflalso supplyair to the side of the flame, both above and below the ledges 71?, thus insuring the necessary amount of oxygen required for perfect combustion. 1 hat 1 claim as my invention is l vflhe reservoir A, formed with a central opening, B, in which is inserted a retort, O, lromwwhich heat is conveyed to the contents or said reservoir, substantially as shown and described. 2. In combination with the reservoir A, the inclosed retort 0, having arms D, which penetrate the inner wall of said reservoir, and tubular communicating passages c 0, substantially as shown and described.

513; ei burnerui dompose'd ofthe 001mb and perforated wing-sf h h yhaving shoulders or ledges 12?, substantially for the purposes set forth. a

4. The combination of the reservoir A, retqrtvO having tubes 0 c and arms D D, wicktube E,and burner H, the several parts being constructed and combined substantially as described, for the purpose specified. 1

5. The method herein described of burning coal-oil, by partially volatilizing it in an air-v tight reservoir, conducting it thence: to a packed retort, where it is completely volatilized, and then supplying it in a gaseous form at the point of combustion, whence heat is conducted to produce volatilization insaid reservoir and retort, as set forth.

,In testimony that'IclaiIn'the foregoing I have hereunto set myhand this 10th day of February, 1876.

ROBERT W. PARK. l 

